package com.xiaolun.netty.tcp;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;

import java.nio.charset.Charset;
import java.util.UUID;

public class MyServerHandler extends SimpleChannelInboundHandler<ByteBuf> {
	private int count;

	@Override
	protected void channelRead0(ChannelHandlerContext ctx, ByteBuf msg) throws Exception {
		byte[] buffer = new byte[msg.readableBytes()];
		msg.readBytes(buffer);
		//将buffer转成字符串
		String message = new String(buffer, Charset.forName("utf-8"));
		System.out.println("服务器接收到数据 " + message);
		System.out.println("服务器接收到消息量=" + (++this.count));
		//服务器回送数据给客户端, 回送一个随机id ,
		ByteBuf responseByteBuf = Unpooled.copiedBuffer(UUID.randomUUID().toString() + " ", Charset.forName("utf-8"));
		ctx.writeAndFlush(responseByteBuf);
	}

	@Override
	public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
		//cause.printStackTrace();
		ctx.close();
	}
}
